12408449544 has 96 divisors (see below), whose sum is σ = 33964683480. Its totient is φ = 4092168192.

The previous prime is 12408449533. The next prime is 12408449563. The reversal of 12408449544 is 44594480421.

12408449544 is a `hidden beast` number, since 1 + 2 + 40 + 84 + 495 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2205429444 + 10203020100 = 46962^2 + 101010^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12408449544.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6288142 + ... + 6290114.

Almost surely, 2^12408449544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12408449544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16982341740).

12408449544 is an abundant number, since it is smaller than the sum of its proper divisors (21556233936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12408449544 is a wasteful number, since it uses less digits than its factorization.

12408449544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 12408449544 in words is "twelve billion, four hundred eight million, four hundred forty-nine thousand, five hundred forty-four".